I-generator ne-motor zaziwa njengezinhlobo ezimbili ezahlukene zemishini eyimishini.Enye iwukuguqula amanye amandla abe amandla kagesi okukhiqiza amandla, kuyilapho injini iguqula amandla kagesi abe amandla emishini ukudonsa ezinye izinto.Nokho, lezi ezimbili azikwazi ukufakwa futhi esikhundleni omunye nomunye.Ezinye izinhlobo zamajeneretha namamotho zingashintshwa ngemva kokuklanywa nokuguqulwa.Kodwa-ke, uma kwenzeka iphutha, i-generator iphinde iguqulelwe ekusebenzeni kwezimoto, okuyisivikelo esiphambene ngaphansi kwamandla aphambene we-generator esifuna ukukhuluma ngayo namuhla.
Ayini amandla ahlehlayo?
Njengoba sonke sazi, isiqondiso samandla ejeneretha kufanele sigeleze sisuka lapho siya khona siye esiqondisweni sesistimu.Nokho, ngesizathu esithile, lapho i-turbine iphelelwa amandla ashukumisayo futhi isishintshi se-generator outlet sihluleka ukuhamba, isiqondiso samandla siyashintsha sisuka ohlelweni siye ku-generator, okungukuthi, i-generator ishintsha injini esebenzayo.Ngalesi sikhathi, i-generator idonsa amandla asebenzayo ohlelweni, olubizwa ngokuthi amandla abuyele emuva.
Ukulimala kwamandla ahlehlayo
Isivikelo samandla esihlanekezela i-generator siwukuthi lapho i-valve ye-throttle eyinhloko ye-steam turbine ivaliwe ngenxa yesizathu esithile futhi amandla okuqala elahlekile, i-generator iphenduka ibe injini yokushayela i-turbine yesitimu ukuze ijikeleze.Ukuzungezisa ngesivinini esiphezulu se-steam turbine blade ngaphandle kwesitimu kuzodala ukungqubuzana kokuqhuma, ikakhulukazi ku-blade yesiteji sokugcina, kungase kubangele ukushisa ngokweqile futhi kuholele engozini yomonakalo we-rotor blade.
Ngakho-ke, ukuvikela amandla ahlehlayo empeleni kuwukuvikela kwe-steam turbine ngaphandle kokusebenza kwesitimu.
Ukuvikelwa kwamandla okuhlanekezela okuhleliwe kwejeneretha
Uhlelo lwejeneretha ukuvikela amandla ahlehlayo ikakhulukazi ukuvimbela ijeneretha ukuthi ingakhubeki ngokuzumayo iswishi ye-generator outlet ngaphansi komthwalo othile kanye nevalve eyinhloko ye-throttle turbine yesitimu ayivalekile ngokugcwele.Kulokhu, iyunithi yejeneretha ye-steam turbine ithambekele ekubeni nesivinini esikhulu ngisho nokushesha.Ukuze ugweme lesi simo, kwezinye izivikelo ngaphandle kwephutha le-short-circuit, ngemva kokuthunyelwa kwesignali yesenzo, izoqala ngokuvala i-valve ye-steam eyinhloko ye-steam turbine.Ngemva kokusebenza kwamandla ahlehlayo * * * ejeneretha, izokwakha kanye ne-valve enesignali evala i-valve yesitimu esikhulu, yenze uhlelo lokuhlehla lokuvikela amandla ngemva kwesikhathi esifushane, futhi isenzo sizosebenza lapho simi ngokuphelele.
Umehluko phakathi kokuvikela amandla ahlehlayo kanye nokuvikelwa kwamandla okuhlehla kohlelo
Ukuhlehla ukuvikela amandla ukuvimbela ijeneretha ukuthi ingajiki ibe injini ngemva kwamandla ahlehlayo, ukushayela i-turbine yesitimu ukuze ijikeleze futhi ibangele ukulimala kwenjini yesitimu.Ekuhlaziyeni kokugcina, nginovalo lokuthi umguquli oyinhloko uzoqhutshwa uhlelo uma luntula amandla!
Uhlelo lokuvikela amandla ahlehlayo wukuvikela ukugijima kwe-turbine overspeed okubangelwa i-valve edonsa kanzima ukuthi ingavaleki ngokugcwele ngemva kokuba iyunithi yejeneretha inqanyulwe kungazelelwe, ngakho amandla abuyela emuva asetshenziselwa ukugwema.Ekuhlaziyeni kokugcina, nginovalo lokuthi amandla amaningi omguquli oyinhloko azoholela ekusheshisweni kweyunithi.
Ngakho-ke, uma sikhuluma ngokuqinile, ukuvikelwa kwamandla okuhlanekezela kuwuhlobo lokuvikelwa kwe-generator edluliselwe, kodwa ikakhulukazi kuvikela i-steam turbine.Uhlelo lokuvikela amandla ahlehlisiwe akusona isivikelo, kodwa inqubo yesenzo esethwe ukuze kuqashwe uhlelo, okubuye kwaziwe ngokuthi i-tripping yohlelo, ngokuvamile esetshenziswa kumodi yokuvala shaqa.
Okubalulekile ukuthi inqobo nje uma amandla ahlehlayo efinyelela inani elimisiwe, azohamba.Ngokungeziwe ekufinyeleleni inani elimisiwe, amandla ahlehlayo ohlelo nawo adinga ukuthi ivalvu ephihliza kakhulu ye-steam turbine ivalwe.Ngakho-ke, isenzo samandla ahlehlayo kufanele sigwenywe ngesikhathi soxhumano lwegridi phakathi nokuqaliswa kweyunithi.
Lena imisebenzi yokuvikela ukuhlehla kwejeneretha kanye nencazelo yamandla ahlehlayo e-generator.Ukuze ijeneretha ye-steam turbine ekusebenzeni okuxhunywe kugridi, izosebenza njengenjini ehambisanayo ngemva kokuvalwa kwevalvu eyinhloko ye-steam turbine: donsa amandla asebenzayo futhi uhudule i-steam turbine ukuze ujikeleze, okungase ukuthumela amandla asebenzayo ohlelweni.Njengoba i-throttle valve eyinhloko ye-steam turbine ivaliwe, i-blade yomsila we-steam turbine inokungqubuzana nesitimu esisele ukwenza ukulahlekelwa ukuqhuma, okonakaliswa ukushisa ngokweqile ngesikhathi sokusebenza isikhathi eside.Ngalesi sikhathi, ukuvikeleka okuphambene kungavikela i-steam turbine emonakalweni.
Isikhathi sokuthumela: Jan-10-2022
